Custom Brass & Copper Stamping for High-Performance Micro Motor Components
IATF 16949 Certified Partner for Global Tech Leaders including Dyson, DJI, BYD, and Philips. Delivering expert brass stamping solutions, we supply precision electrical contacts, terminals, and brush holders with an annual capacity of 250 million sets.
Our Precision Brass & Copper Stamping Capabilities
Precision Manufacturing
Dimensional Tolerance: Up to ±0.01mm for critical electrical contacts, terminals, and brush holders.
Material Thickness: 0.05mm to 3.0mm (Specializing in ultra-thin phosphor bronze springs and precision copper connectors).
Press Capacity: 95+ high-speed automatic presses ranging from 25T to 300T, specifically optimized for continuous progressive stamping of copper alloys.
Flatness & Edge Control: Flatness within 0.03mm with strictly burr-free edges to ensure zero interference in electrical conductivity and motor rotation.
Production Excellence
Volume Capacity: Massive scalability with an annual output exceeding 250 million sets, ensuring stable supply for global automotive and home appliance giants.
Quality Assurance: IATF 16949 certified process with 100% CMM, 2D vision inspection, and strict material yield strength verification.
Tooling Life: In-house precision Progressive Die design utilizing premium carbide steel, ensuring stable, high-speed production for up to 10 million strokes.
Integrated Supply Chain: One-stop solution from raw brass coil stamping to secondary CNC machining, ultrasonic cleaning, and custom electroplating (Tin/Nickel).
Advanced Surface Finishing Solutions for Brass & Copper
Optimized Copper & Brass Alloys for Precision Stamping
Copper and brass are the lifeblood of micro motor components due to their unmatched electrical conductivity, thermal dissipation, and mechanical resilience. At Yongyuan, we don’t just stamp brass; we optimize it. From high-conductivity pure copper for stators to high-fatigue phosphor bronze for terminal springs, we ensure your parts meet the exact electrical and mechanical demands. Every material coil is strictly verified for purity and yield strength under our IATF 16949 quality system.
C2680 (H65) Yellow Brass
Offers an excellent balance of strength, ductility, and cold-forming properties. The undisputed industry standard for general micro motor terminals, ground pins, and basic connectors.
C2600 (H70) Cartridge Brass
Features superior ductility and deep-drawing capabilities compared to C2680. Perfect for complex, deep-drawn brass housings and intricate electrical sensor caps.
C1100 Pure Copper (ETP)
Delivers the highest electrical and thermal conductivity (100% IACS). Essential for critical power transmission components, heavy-duty motor connectors, and heat sinks.
C5191 Phosphor Bronze
Known for its superb fatigue resistance, wear resistance, and spring qualities. The absolute best choice for electrical contact springs and sliding contacts in automotive motors.
C5210 High-Spring Phosphor Bronze
Contains higher tin content for exceptional mechanical strength and elasticity. Widely used for highly stressed micro-switches and precision relay springs.
Pre-Tin-Plated Brass
A highly cost-effective pre-plated material that eliminates secondary plating costs. Provides excellent direct solderability for high-volume consumer electronics and home appliances.
Tin Phosphor Bronze
Combines the excellent spring properties of phosphor bronze with the enhanced solderability and corrosion resistance of tin. Ideal for advanced PCB motor terminals.
Oxygen-Free Copper (OFC C1020)
Ultra-high purity copper with zero oxygen content, preventing hydrogen embrittlement. Specified for premium audio motors, medical devices, and high-vacuum electronics.
What is Brass Stamping?
Brass stamping is a high-speed, precision cold-forming process that utilizes mechanical presses and custom progressive dies to punch, bend, and shape brass alloys into intricate parts. At Yongyuan, we specialize in manufacturing ultra-precise conductive components—such as motor terminals, brush holders, and electrical contacts—with dimensional tolerances as tight as ±0.01mm, ensuring seamless integration into high-performance micro motor assemblies.
Advantages of Brass Stamping
Superior Electrical Conductivity: Crucial for micro motors, brass ensures minimal electrical resistance, maximizing energy efficiency and motor response.
Excellent Machinability & Tool Life: Brass acts as a natural lubricant during the stamping process, significantly reducing die wear and allowing for massive, stable production runs.
Cost-Effective Scalability: Optimized for high-speed continuous stamping, supporting Yongyuan’s massive 250 million sets annual capacity while keeping unit costs low.
Natural Corrosion Resistance: Non-sparking properties and a natural oxide layer make it perfect for automotive fuel systems and harsh operating environments.
Disadvantages of Brass Stamping (And How We Solve Them)
Higher Raw Material Cost: Brass is inherently more expensive than steel or aluminum. Yongyuan’s Solution: We design highly optimized progressive dies with advanced DFM layout planning to maximize material utilization and minimize scrap, ultimately lowering your per-piece cost.
Surface Tarnishing & Oxidation: Raw brass easily discolors over time when exposed to air. Yongyuan’s Solution: We offer in-house passivation, premium plating options (Tin/Nickel/Gold), and automated anti-tarnish interlayer packaging to ensure 100% cosmetic perfection upon delivery.
Your Strategic Partner for Micro Motor Brass Hardware
Yongyuan is a premier manufacturing hub specializing in high-precision brass components for the global micro motor ecosystem. We combine advanced progressive stamping processes with deep materials science to deliver highly conductive, reliable solutions for global technology leaders.
The Three Pillars of Our Expertise:
A: Extensive Industry Applications
Automotive Precision: Supplying critical brass terminals and contacts for LiDAR systems, rotating center screens, power seat motors, and electric window regulators.
Smart Home & Personal Care: Expert manufacturing of brush holders and contact springs for high-speed hair dryers (Dyson-style), robot vacuums, and sonic toothbrushes.
Advanced Technology: Precision non-magnetic hardware for drone gimbal systems, smart lawnmowers, and security cameras.
B: Mastery of Complex Stamping Processes
High-Speed Progressive Stamping: Specialized in producing complex brass electrical contacts with high surface quality and zero burrs.
Automation: Utilizing custom progressive dies and composite molds to achieve stable, high-volume production for global supply chains.
Full Component Spectrum: We manufacture everything from basic brass ground pins and motor terminals to intricate phosphor bronze springs.
C: Engineering-Led Excellence
Optimized Materials: Mastery in processing a wide range of copper alloys (C2680, C5191, C1100, Pre-Tin-Plated Brass) tailored for specific motor conductivity requirements.
Precision Control: Our technical team manages complex processes including precision bending, coining, and forming to ensure exact fitment.
Efficiency & Quality: We provide detailed DFM feedback and operate under a strict IATF 16949 quality management system to ensure zero-defect goals for every batch.
Precision Brass Stamping Workflow
Our engineering-led workflow is specifically optimized for the high-speed, continuous production of brass and copper motor components, ensuring uncompromising electrical reliability and ±0.01mm precision.
- 01. DFM Review & Tooling Layout Optimization: Brass is a premium material, so material utilization is critical. We conduct rigorous DFM audits to design high-speed Progressive Dies with optimized strip layouts, minimizing scrap yield and lowering your per-piece cost. We also simulate bending springback for copper alloys in advance.
02. High-Speed Blanking & Piercing: Utilizing 95+ automatic high-speed presses, we execute precise cutting and piercing at massive scales. We engineer micro-clearances in our dies to guarantee 100% burr-free edges, which is strictly required for electrical contacts to prevent short circuits.
03. Precision Bending & Coining: We leverage specialized bending and coining techniques to shape intricate 3D geometries for motor brackets, brush holders, and terminal springs. Our strict process control ensures exact contact angles and maintains the spring force of phosphor bronze components.
04. Ultrasonic Cleaning & Plating Prep: Before secondary plating (Tin/Nickel/Gold) or shipping, all brass parts undergo Medical-Grade Ultrasonic Cleaning and anti-tarnish passivation. This ensures zero-particle purity and perfectly pristine surfaces for direct PCB soldering.
Why Leading Brands Partner with Yongyuan for Brass Stamping
Unrivaled Scalability: Powered by 95+ automatic high-speed presses optimized for continuous coil stamping, we deliver an annual capacity of 250 million sets of brass terminals and electrical contacts, ensuring stable supply for global EV and appliance giants.
Automotive-Grade Reliability: Supplying critical highly-conductive hardware for LiDAR, Power Seat Motors, and High-Speed Hair Dryers where electrical stability, zero-burr edges, and fatigue resistance are non-negotiable.
Zero-Defect & Ultra-Clean Finishing: Operating under strict IATF 16949 standards, we offer integrated premium plating (Tin/Nickel/Gold) and Medical-Grade Ultrasonic Cleaning to guarantee zero-particle purity and perfect solderability for PCB assembly.
Precision Engineering (±0.01mm): Reliable quality guaranteed by rigorous in-house DFM audits, ensuring complex phosphor bronze springs and brass connectors meet strict assembly tolerances and spring force requirements.
Technical Excellence: Overcoming Brass Stamping Challenges in Micro Motor Hardware
Brass and copper present unique manufacturing hurdles, particularly in high-speed precision stamping for conductive components. Here is how our engineering team ensures flawless execution:
- 01. Micro-Burr Management (Electrical Safety & Conductivity) For highly sensitive components like LiDAR connectors and drone motor terminals, even a microscopic burr can cause a short circuit or mechanical wear. We engineer ultra-tight clearances in our progressive dies and utilize advanced chemical and mechanical deburring processes to guarantee 100% burr-free edges, ensuring perfectly safe electrical contacts.
- 02. Springback & Fatigue Control (Precision Geometry) Phosphor bronze (C5191) is notoriously difficult to form due to material springback. Our engineers leverage advanced DFM simulation software to compensate for bending angles during the die design phase. By optimizing the strip layout relative to the material’s grain direction, we ensure consistent spring force and ±0.01mm tolerances for complex motor contact springs.
- 03. Oxidation Prevention & Solderability (Surface Integrity) Bare brass tarnishes rapidly when exposed to air, which can completely ruin PCB soldering on the assembly line. We solve this through rapid inline processing, Medical-Grade Ultrasonic Cleaning, and premium plating (Tin/Nickel). Finally, parts are sealed in automated anti-tarnish, moisture-barrier packaging to ensure perfect direct solderability upon unboxing.
Quality-Controlled Brass Finishing Standards
Quality-Controlled Finishing Standards
At Yongyuan, we provide more than just stamping. We manage the entire lifecycle of your precision brass and copper components. Even for specialized processes like customized tin or nickel plating, we leverage a network of IATF 16949-audited partners.
Every finished part undergoes rigorous testing to ensure electrical and mechanical reliability, including:
X-Ray Fluorescence (XRF) Testing: Precise measurement of plating thickness (Tin/Nickel/Gold).
Salt Spray Testing: Up to 480 hours to guarantee superior corrosion resistance.
Solderability Testing: Ensuring perfect adhesion for direct PCB assembly.
Cross-cut Adhesion Tests: Verifying the durability of the barrier plating layer.
IATF 16949 Certified Factory with 250M Annual Capacity
Automotive-Grade Quality (IATF 16949)
Automotive-Grade Quality: Our IATF 16949 certification ensures every part meets the rigorous standards of the automotive and medical industries.
Scalable Capacity: 250M Sets/Year
Scalability: From rapid prototyping to annual orders of 100 million+ units, our 230-person team and 90+ CNC machines ensure on-time delivery.
One-Stop Precision Supply Chain
One-Stop Supply Chain: By integrating stamping, CNC machining, and a vast network of certified finishing partners, we handle the complexity so you can focus on your business.
Get a Technical Quote & DFM Feedback within 24 Hours
Contact our experts and we will provide you with the technical precision hardware solutions that best suit your needs.
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